20 



FLUORESCENCE OF THE URANYL SALTS. 



TABLE 9. Fluorescence bands of two phosphates. 



TABLE 10. Fluorescence bands of a nitrate, oxalate, and fluoride. 



of the location of the latter. The envelopes of the 4 nitrates in figure 8 

 have the same characteristics. The crests of 3 agree (at 0.510^), 

 while the envelope D of rubidium uranyl nitrate, in the spectrum of 

 which the bands are vaguely double-crested, is displaced. In the two 

 uranyl acetates (fig. 9) the same identity of type and position shows 

 itself. 



To reduce these spectrophotometric measurements to relative energy 

 units the distribution curve of the comparison light must be known. 

 This curve for the acetylene flame, which was the source employed, 

 has been carefully determined, and data published by Coblentz were 

 used in the computation. 



